sensors Mode-S transponder

502D7B

ICAO 24-bit transponder address · allocated to Latvia

Currently assigned to YL-ABQ · AIRBUS A220-300

Hex
502D7B
Octal
24026573
Decimal
5,254,523
Country
LV
Tail
YL-ABQ
Type
BCS3
No current signal · last broadcast 12h ago
Flights observed
15
Distinct callsigns
10
Country
LV
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 502D7B.

Country allocation

The ICAO 24-bit address 502D7B falls within the block assigned to Latvia (LV) by ICAO Annex 10, Volume III. Every aircraft registered in Latvia receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 10 distinct

Callsign Airline Flights Last seen
ASL64R - 3 2026-04-13
ASL54D - 2 2026-04-13
ASL37H - 2 2026-04-14
ASL18A - 2 2026-04-13
ASL98C - 1 2026-04-12
ASL96D - 1 2026-04-13
ASL90F - 1 2026-04-12
ASL81E - 1 2026-04-13
ASL69U - 1 2026-04-14
ASL54C - 1 2026-04-13

Recent flights last 15

DateFlightRouteTakeoffLandingDuration
2026-04-14 ASL37H - Apr 14, 09:10 UTCApr 14, 10:30 UTC1h 20m
2026-04-14 ASL37H - Apr 14, 07:55 UTCApr 14, 09:05 UTC1h 10m
2026-04-14 ASL69U - Apr 14, 05:15 UTCApr 14, 06:45 UTC1h 30m
2026-04-13 ASL54D - Apr 13, 19:50 UTCApr 13, 20:25 UTC35m
2026-04-13 ASL54D - Apr 13, 19:15 UTCApr 13, 20:10 UTC55m
2026-04-13 ASL81E - Apr 13, 16:30 UTCApr 13, 17:55 UTC1h 25m
2026-04-13 ASL96D ATH → BEG Apr 13, 14:05 UTCApr 13, 15:25 UTC1h 20m
2026-04-13 ASL64R - Apr 13, 12:20 UTCApr 13, 12:55 UTC35m
2026-04-13 ASL64R - Apr 13, 11:55 UTCApr 13, 12:55 UTC1h 0m
2026-04-13 ASL64R - Apr 13, 11:40 UTCApr 13, 12:15 UTC35m
2026-04-13 ASL18A - Apr 13, 08:20 UTCApr 13, 09:30 UTC1h 10m
2026-04-13 ASL18A - Apr 13, 07:45 UTCApr 13, 08:15 UTC30m
2026-04-13 ASL54C - Apr 13, 04:50 UTCApr 13, 06:40 UTC1h 50m
2026-04-12 ASL98C ZRH → BEG Apr 12, 18:50 UTCApr 12, 20:15 UTC1h 25m
2026-04-12 ASL90F - Apr 12, 17:15 UTCApr 12, 17:50 UTC35m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the YL-ABQ page for operator, model, and routing details .

Mode-S 502D7B frequently asked

What is Mode-S code 502D7B?
502D7B is an ICAO 24-bit transponder address. Allocated to Latvia. Assigned to YL-ABQ.
Where is Mode-S 502D7B registered?
Mode-S code 502D7B is allocated to Latvia (LV). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 502D7B broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 502D7B, octal 24026573, decimal 5,254,523.
What flights does 502D7B operate?
Mode-S 502D7B has broadcast 10 distinct callsigns, including ASL64R, ASL54D, ASL37H, ASL18A, ASL98C.